286 



B0TAN7, 



tendril-like organ, upon whose extremity there develops a 

 hollow closed body, which finally becomes open by the 

 separation of a hinged lid (Fig. 173, d, e, /). In the 



Fig. 173.— Two leaves of Nepenthes, the Indian Pitcher-leaf. /, the lid, 

 which is still closed in the younger leaf. Reduced. 



cavities of these pitchers a watery, slightly acid fluid is 

 secreted; upon their borders are secreted honey- or nectar- 

 drops, which attract insects, and these falling into the 



